2065512465 has 24 divisors (see below), whose sum is σ = 3593552040. Its totient is φ = 1097505024.

The previous prime is 2065512403. The next prime is 2065512467. The reversal of 2065512465 is 5642155602.

2065512465 is a `hidden beast` number, since 20 + 6 + 551 + 24 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 362217024 + 1703295441 = 19032^2 + 41271^2 .

It is not a de Polignac number, because 2065512465 - 2⁹ = 2065511953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2065512467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73212 + ... + 97421.

It is an arithmetic number, because the mean of its divisors is an integer number (149731335).

Almost surely, 2^2065512465 is an apocalyptic number.

It is an amenable number.

2065512465 is a deficient number, since it is larger than the sum of its proper divisors (1528039575).

2065512465 is a wasteful number, since it uses less digits than its factorization.

2065512465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170913 (or 170910 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 2065512465 is about 45447.9093578572. The cubic root of 2065512465 is about 1273.5302741643.

The spelling of 2065512465 in words is "two billion, sixty-five million, five hundred twelve thousand, four hundred sixty-five".